Wondering about something: Seems like women BBs keep competing succesfully way into their 40s, while male pro's always get worse after 40 (Ron, Dex). The women must juice extremely as well for looking the way they do. Why can they keep their size and shape longer ??

I wouldn't say that's necessarily true in all cases... there are men and women BBs who age well and those who don't do so well. Alot of it is genetic disposition, family history, and how you take care of yourself through your whole adult life. Male pro's also do a shitload more drugs quantity-wise.